Home / 3,218.86-4,438.63-2,381.30

Finding the Fourth Proportional to 3,218.86, 4,438.63 and 2,381.30

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Solution

The fourth proportional to 3,218.86, 4,438.63 and 2,381.30 is: 3,283.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.86 : 4,438.63 = 2,381.30 : x
  2. Step 2: Convert to fraction form
    3,218.86/4,438.63 = 2,381.30/x
  3. Step 3: Cross multiply
    3,218.86x = 4,438.63 × 2,381.30
  4. Step 4: Simplify right side
    3,218.86x = 10,569,707.05
  5. Step 5: Solve for x
    x = 10,569,707.05/3,218.86
  6. Step 6: Final answer
    x = 3,283.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.